Dust on sensor

So how much you battling dust? Especially interesting to hear from D8x0 owners where even smallest specks can be visible.

I cannot see dust at all on my Df up until F16. At F32 it barely visible, but very noticeable at F64. Yes, for portraits it irrelevant, but how about macro? I shoot reference photo at F16, found nothing and convinced myself that my sensor is dust-free. But few days ago I shoot macro at 1:1 and was amused how much dust is visible at F64! I dry clean sensor and blew with can air - majority gone, but few still remains. So what macro guys of D8x0 do - clean it or rid of it in PP? Is Dust Off Reference work OK? I need Capture NX to try it and I am not sure if it worth it. Any comments?